Assigjstob to the bassick manktac



im s g w24. r l 1,479,983'` E. W.' D Avis LUBRICATING SYSTEM Filed Feb. 14. 1921 Patented dan. 8, w24.,

' realiser w. Davis, or Oax relax, ILLiNOs, nssre'nort frov run isn'ssio'x'nrenuracreame COMPANY, or CHICAGO, rumors, n oonronn'rron or nnrlewenn.

:enamorarme system.

Application led February 14, 1921. Serial No. 444,333. y

, lubricating systems, and is particularly eoncerned with improvements in lubricating systems designed to supply lubricant to a l bearing under high pressure.

There are lubricating systems at present in use which comprise a plurality of nipples vor coupling members, which are secured to the bearings to be lubricated, and a lubricant compressor having a iiexible discharge conduit, the free end of which is provided with a coupling member adapted to be successively attached to and detached from the nipples. rThe compressor comprises a piston by means of which the lubricant therein can be placed under pressure, and forced intothe bearings.` In such systems where the lubricant compressor has sucient capacity to hold any considerable amount of lubricant, the total pressure, which`must be exerted upon the lubricant in order to subject the lubricant in the bearing to a pressure 'of from three or four hundred pounds to eight or nine hundred pounds per square inch, is quite considerable, and requires the application -of such a large torqueto the handle of the screw-threaded piston rod that it is more or less diiiicult for some people to obtain the desired pressure, and where, as

40 for instance. in a garage, one person is required to lubricate a plurality of cars, it becomes tiresome.

t will, of course, be understood that it does not require a pressure of three hundred l5 pounds or more to force lthe lubricant into every bearing, but occasionally a bearing is -found which requires the use of lubricant under exceedingly high pressure.

' The objects of my invention are:

First: To provide a lubricating system comprising a plurality of nipples, a compressor for supplying lubricant thereto, and

means whereby the lubricant supplied to the nipple, or bearing can be placed under exvation, and partially in section, showing the ceedngly high pressure with" `comparatively no eiiorton thepart of the operator.

K Second: To provide a systemof the chari acter described, lcomprising means auxiliary to the main compressor forI increasing the pressure,v on the lubricant: supplied to the bearings. 1

Third: To provide a system of the character described, in which the lubricant in the discharge conduit and the compressor itself is not subjected to excessive pressures. Fourth: To provide an auxiliary pump ror compressor which can be quickly attached to or detached from the main compressor, and by means of which the pressure on the lubricant can beeasily increasedl as desired.

Fifth: To provide a system of the vcharacter described comprising an auxiliary comressor which can be quickly attached to and .etached from the coupling of the Hexible conduit of the main compressor and which comprises means for making successive detachable connections with 'the nipples which are to receive the lubricant.

Other objects of my invention will ap,

pear as this description progresses, reference being had to the accompanying drawings in Which the figure is a view partially in eledetails of construction of my limprove lubricating system, one portion of the drawing being shown on a larger scale than the other.

The compressor of my improved lubricating system comprises a cylindrical barrel 5 having a removable cap 6 at one end, which isremoved for` the purpose of filling the barrel. A screw threaded nut 7 extends through the cap 6, and engages the threads of the screw threaded piston rod 8, the inner vend of which is provided with a suitable plunger 9, and the outer end of which has a handle l() by means vof which it can be rotated.

A flexible metallic or other suitable con-V duit 11 lis connected with the end of the bar- -rel opposite the cap 6, and at its free end is provided with a swivel coupling member C, which is adapted to be' attached to and def tached from the nipples A12, which are se! cured to the vbearings to be lubricated. While my invention is not limited to any particular form .of coupling member or nipple, the coupling illustrated herein comprises a sleeve` 13, the free end of which has a pair of oppositely disposed bayonet slots F73 el 14C formed therein for receiving the pins 15 forming a part of the nipples, and for simi-v4 larly receiving the ends of the pins 16, to which reference will be made later on. The sleeve 13 is screw threaded upon a plug 17, which is rotatably mounted upon atubular member` 18. The inner end ot the tubular member 18 is threaded into and extends through the bottom of the cup 19, in which the free end of the metallic conduit 11 lis soldered or otherwise secured. gasket 2O interposed between the tubular member 18 and the plug 17 seals the joint between these two members.

il cup shaped leather gasket 21 is slidably mounted in the bore of the sleeve 13, and is yieldingly held in its outermost position by the compression sp'ring 22.

The auxiliary compressor 'forming apart of my improved lubricating system comprises a sleeve to one end of which is secured a nipple 26, having the pin 16 eX- y tending outwardly'trom both sides thereof,

and by means of which it can be detachably secured to the sleeve 18 ot the'coupling C. The opposite end of the sleeve 2*,3 is provided with bayonet slots 27, by means ot which the auxiliary compressor can be attached to and detached from the nipples 12, the slots 27 co-acting with the endsot the pin 15 in a well-known manner. A cup leather 28 similar to cup leather 21 is slidably mounted in the bore of the sleeve 25, and is yieldingly held in its outermost position by a compression spring 29. A ball check valve 8O seats against the inner end of the nipple 2G. and is yieldingly held in place by the end of the spring opposite the cup' leather 28.

rEhe pressure element of my auxiliary compressor comprises the barrel 81, one end ot which is provided/with a threaded discharge conduit 32 which screws into or is otherwise secured in a suitable opening tormed in the side or" the sleeve 25, so as to establish communication between the barrelA 31 and the sleeve 25. The opposite end of the barrel 31 is provided with a cap 33,

preferably detachably secured thereto, in'

which is threaded a piston rod 34, carrying at its inner end a plunger comprising the cup leather 35 and the follower 3G, both of which are preferably swiveled upon the inner end ot the rod 34. The outer end of the. rod 5f-1- is provided with suitable handle members 87, and a knurled extension 38.

Ordinarily, in lubricating a ear or other piece ot machinery, the coupling C will be attached directly to the nipple 12, and the lubricant can be Jforced into the bearing under comparatively low pressure. r1When, however, a bearing is encountered which requires excessive pressure on the lubricant to y discharge the used lubricant therefrom, and

replace it with fresh, the nipple 26 of my Levens-sa auxiliary compressor is coupled to the coupling C, and the open end ot the sleeve 25 is attached to the nipple which is to receive the lubricant. The main compressor then actuated to till the sleeve 25 and the barrel 31 with lubricant. the plunger in the barrel 2&1 having previously been moved to its extremeouter position. The operator thereupon moves theplunger inwardly by rotating the handle 37 in the proper direction.

After my auxiliary compressor has been` used for supplying lubricant to a bearing, it can be detached from a main compressor and the plunger .in the barrel 31 can be easily and 'quickly returned to its outer position by lmerely grasping the hnurlcd handle 38, and twirling it. Under these conditions, the handle members 37 will act as a ly wheel, andl cause the plunger to return to its initial position.

While l have described the details of construction of my improved lubricating system, it is to be clearly understood that my invention is not limited to these details, but is capable ot other adaptations and moditications within the scope of theI appended claims, and it is to be particularly understood that while l have illustrated the auxiliary compressor forming a part ot my system in connection with alulnicating system of conventional construction, my invention is not to be limited to the use of an auX- iliary compressor with the particular lubricating system disclosed herein.

Having thus described my invention, what l claim is:

1. rl`he combination with a lubricant compressor havingv a discharge conduit provided at its -free end with a coupling member Yfor making a detachable connection with a lubricant receiving nipple, otl means for increasing the pressure on the lubricant delivered to the nipple, comprising a sleeve having means at one end' for making a detachable connection-with said coupling member, and means at the other end for making a detachable connection with the nipple, a high pressure pump communicating with `said sleeve, and a check valve in said sleeve tor preventing reverse i'iow `ot lubricant through said conduit. v

2. The combination with a lubricant comllti pressor having a discharge conduit provided at its free end with a coupling member for making aI detachable connection with a. lubricant receiving nipple, of means for increasing the pressure on the lubricant delivered to the nipple, comprising a sleeve vhaving means at one end for making a detachable connection with said coupling member, and

means at the other end for making a de- EDNA V. GUs'rAFsoN, E. BOURGEOIS. 

